IMPORTANT NOTE :

We recommended that the water supply to the pipe you are cutting into be turned off while you are installing the valve Most times these valves work perfectly but in a very few odd exceptions they might fail to cut or to seal correctly.

Reasons for failure can be incorrect fitting. Scores, dents or bends on pipe, paint or cement residue on pipe. Pipe corrosion caused by flux residue. If you turn off the water before starting then you will be able to self-test and proceed without risk.

Valve will only cut into standard British 15mm table X copper. It will not work on any other type of pipe.